Goal 3: Community Acceptance

Types of CSO Solutions

As defined by the Long Term Control Plan, the Program includes a variety of solutions which include the following types of control projects.

Targeted Sewer Separation (East of 72nd Street)

Existing single-pipe combined sewer systems will be separated in targeted areas of the city to carry stormwater and sanitary sewage in separate pipes. New sewers will be installed to convey either the sanitary sewage or stormwater, and existing pipes will be used to carry the other flow.

Deep Tunnel

This includes a 5.4-mile tunnel along the Missouri River from combined sewer outfalls located north of Cuming Street to the Missouri River Wastewater Treatment Plant (located south of the Hwy 275 bridge). The tunnel will be approximately 170 feet below the surface, approximately 15 feet in diameter and will convey combined sewage to a new high-rate treatment plant adjacent to the current Missouri River Wastewater Treatment Plant. The tunnel will store the combined runoff until it can be treated and discharged to the Missouri River.

High-Rate Treatment Facilities

High-rate treatment facilities will be built at the Missouri River Wastewater Treatment Plant and near 64th and Dupont Streets to treat potential overflows before they reach the Missouri River and Papillion Creek. These facilities (Saddle Creek RTB) are designed to treat overflows during wet weather events when the combined sewer system’s capacity is inadequate. Between rain events the facilities will be emptied and cleaned.

Below-ground storage tanks will be built near Benson Park and southwest of the North Omaha Power Plant (along Pershing Drive). These will capture overflows during rain events when the combined sewer system’s normal capacity is inadequate. Between rain events the facilities will be emptied and cleaned. Additionally, a storage tank will be built at the MRWWTP and the City’s Joint Use Facility near 22nd and Y Streets.